One way to measure the shift in shutdown arguments: Hashtags

Republican arguments over the government shutdown have shifted so much that the party hasn't even had a consistent hashtag.While Democrats in Congress have generally kept their Twitter message the sa, blaming the shutdown on the GOP and calling for the House to vote on a spending bill, Republican messaging has varied almost daily.Here's a look at how both parties have used hashtags in the current showdown.RepublicansBefore the shutdown, Republicans tried to blame it on the upper chamber using #SenateMustAct.The papers …